Resilient tube socket



June 18, 1929. G, H, DAWS 1,717,762

RES ILIENT TUBE SOCKET Filed Jan. 8, 1926 In, new tor,

7 7, fix mwd a/ a a??? orne ya Patented June 18, 1929.

UNITED STATES PATENT OFFICE. 7

enonen nowrinrr DAVIS, or 'nnwnniz, NEwJnusnY.

RESILIENT TUBE SOCE T.

Application filed January The present invention, in some of its as pects, may be considered as an improvement upon that covered by my co-pending application, Serial No. 54,522, filed September 4, 1925. The general objects of the invention are, therefore, the same as in the previous case.

Among the special objects of the present invention are to provide improved means for resiliently supporting the socket upon a base or panel so as to protect the tube from shock or mechanical vibration, to combine such resilient supporting means with the contact strips of my prior application in such manner that both may be secured by the same fastening device, and to provide means for 'prevjenting angular displacement of su'ch strips and supporting means.

In order that the invention may be readily understood, reference is had to the accomably panying drawing forming part of this specification, and in which Figure 1 is a vertical central section through one of my improved resilient sockets complete, showing it as it appears when attached to a base or panel;

Figure 2 is a plan viewthereof;

Figure 3 is an inverted plan view thereof;

Figure 4 is a view, showing in side eleva tion a modified construction of contact strip and supporting means;

Figure 5 is a fragmentary sectional view, similar to Fig. 1, but showing a further modified construction of contact strip and supporting means;

Figure 6 is a plan view of the combined contact strip and supporting means shown in Figure 5;

Figure 7 is an end view of the device shown in Figure 6; and

Figure Sis a view similar ,to Figure 5,,but showing a still further modified construction. Referring to the drawings in detail, my improved socket comprises a shell l',prefersulating materials such as phenol-formaldehyde condensation products, hard rubber compositions or the like. This shell is preffo'rmed by molding thermoplastic in-' a, 1926. Serial No. 80,085.

erably of frusto-conical shape, and is generally slmllar to that shown in my prior copending appllcation. The upper or smaller end 2 is provided with a sunken center 3,

in which are formed two small and two large holes 4 and 4* respectively, to receive the contact pins projecting from the tube base. Inside of the shell are secured metallic contact strips 7, having their upper ends so posltioned as to engage with a wiping contact the sides of the tube pins as the latter are lnserted in the holes 4: and 4 These contact strips are held a ainst the inner wall of the shell, by means 0 screws 8, constitutmg binding posts, and carrying on their outer ends nuts 9, all as set forth in my prior application.

The shell of the present invention differs from my prior design, however,.in the followlng respects. At the center of the shell, 15; formed a pocket or cup 6, having a central openlng 6 for a purpose which will hereinafter appear. In order to prevent the contact strips 7 from angular displacement about the screws 8, I form on the inside of the shell adjacent the holes through which the screws 8 pass, pairs of space lugs or ribs, as clearly shown at 1 in Figure 3, these ribs being so disposed as to snugly receive the strips 7 between them and thus securely maintain such strips in the proper position. (On account of clearness, these ribs have been omitted from Figure 1.)

X represents a. suitable base or panel of insulating material on which the socket or holder is mounted. VVhilein my prior application the edge 5 of the large end of the socket is shown as resting directly against such base or panel, in the present case, the edge 5 is spaced from the base or panel X by means of special resilient supporting means. Such supporting means, as shown in Figure 1, consists of'resilient spring metal clips 10 secured inside the shell and having their lower ends projecting beyond the edge 5 and bent to form suitable feet. One such clip or foot is provided for each contact strip 7, and the clip or foot is held in position by the same screw, 8 which secures the corresponding contact strip 7, the clip 10 being shown as superposed upon the contact strip.-v r

, cured. Also, as

It will be understood that the ribs 1*, shown in Figure 3, are preferably of such depth'as to engage the sides of the clips 10, also, and thus prevent angular displacement ofsuch clips.

A screw 11 1s used to secure the socket to the base or panel, such screw passing through the hole 6? in the bottom of the pocket or cup 6, and having ahead which fits within such pocket. Between the head of the screw and the bottom of the pocket is interposed a helical spring 12, which serves to yieldingly hold the socket against the panel.

From the above description, it will be' seen that the socket or shell 1 is confined between two separate resilient supporting means, namely, the spring feet 10 and the spring 12,.which presses such feet against the panel. That .is to say,'the socket .is resiliently supported in both directions, and

in this way, the tube, when mounted in the socket, is effectively protected against shocks,

If itiis not desired to use binding posts such. as 9, shown in Figures 1, 2 and 3, I may employ the construction illustrated in Figures 5, 6 and 7. In these figures, I have shown how a spring clip constituting a contact 7. and a resilient foot 10 may be secured to the shell 1 by means of a small screw. 14, terminating substantially flush with the' outer surface of the shell, and may have its lower end extended as at- 15 to support a binding screw 16. This screw may be provided with a pair of clamping nuts tween which the 17, bewire or lead may be se-' shown in Figures 5, 6 and 7, the clip is still'further extended beyond the clamping screw 16, and has its end portion bent up to fornra trough shape receptacle 18 of'wi-re. The wire maybe laid in this trough and then secured to the binding screw 16, or,'if preferred, the binding screw may be omitted and the wire soldered in the trough I8.

In Figure 8, I have illustrated a still further modified construction. Here, the contact strip 19, which is secured to the shell by a screw 21, having a nut 22, is extended horizontally, as shown at 20, and does not directly enga e the panel'X, but is received in a notch 1 ormed in the lower edge of the shell. The horizontal extension 20 carries, at its free end, beyond the shell, a screw .24

those skilled in the art, and may be employed without departing from the spirit of the in vention. It will be seen that I have pro vided a socket which is simple and cheap to manufacture, attractive in appearance, and which will effectively protect the tube from shock and vibration and it'is thought that the man advantages of my invention will be readi y appreciated without further discussion.

What I claim is 1. A tube socket comprising a hollow shell of frusto-conical form, the smaller end being formed to receive a tube, and a plurality of springy strips mounted against the inclined inner wall of said shell, the free ends of said strips projecting radially beyond the edge of the larger end thereof and being bent to form resilient feet for supporting the socket. 2. A tube socket-comprising a hollow shell, a plurality of resilient strips mounted within sald shell and projecting radially beyond the edge thereof to provide a yieldable support for the socket, th'e projecting ends being free, and means independent of said strips for yieldingly pressing the said free ends against a fixed base.

3. The combination with a radio tube socket, ofresilient supporting feet fixed thereto at one side thereof, and separate resilient means engaging the other side thereoffor yieldingly holding the socket in position.

4. A radio tube socket comprising a hollow shell, resilient supporting means carried by and projecting from one side thereof and,

adapted to freely rest upon a base, a pocket at the other side of said shell, a spring in said pocket, and means bearing upon said spring and adapted to engage said base to yieldingly hold the socket in position.

5. The combination with a tube socket, of spring strips carried by and projecting radially therefrom, the "projecting portions of' said strips constituting means by which the socket is resiliently supported upon a suitable base, and a single central securing means.

holding the socket to the base, whereby said socket and resilient supporting means may be angularly adjusted on said base about said centralsecuring means.

6. A tube socket comprising an insulating shell having holes for the reception of the prongs of a tube, contact strips of spring metal securedto the shell beneath said holes in such position as to be engaged'by said prongs when inserted in the holes, the ends of said contact strips being extended radiallybeyondthe shell to form means for resilient- 1y supporting the socket upon a suitable base, tact strips inside of said shell, and means for and wiring terminals carried by the outer securing said strips to the shell, the ends of end portions of said strips, said wiringftersaid contact strips being extended radially 1 minals being freely movable relative to said beyond the edge of the shell to form resilient 5 base. a feet on which the socket is supported.

' 7. A tube socket comprising a hollow in-- In testimony whereof I afiix my signature.

sulating shell, a plurality of metallic con- GEORGE HOWLETT DAVIS. 

